[LTP] [PATCH v3 2/2] ptrace06: Refactor the test using new LTP API

Wei Gao wegao@suse.com
Mon Jun 3 12:35:53 CEST 2024


Signed-off-by: Wei Gao <wegao@suse.com>
---
 testcases/kernel/syscalls/ptrace/ptrace06.c   | 326 ++++++++++--------
 .../kernel/syscalls/ptrace/ptrace06_child.c   |  16 +
 2 files changed, 202 insertions(+), 140 deletions(-)
 create mode 100644 testcases/kernel/syscalls/ptrace/ptrace06_child.c

diff --git a/testcases/kernel/syscalls/ptrace/ptrace06.c b/testcases/kernel/syscalls/ptrace/ptrace06.c
index a1db3bab8..de9335355 100644
--- a/testcases/kernel/syscalls/ptrace/ptrace06.c
+++ b/testcases/kernel/syscalls/ptrace/ptrace06.c
@@ -1,29 +1,28 @@
+// SPDX-License-Identifier: GPL-2.0-or-later
 /*
+ * Copyright (c) 2008 Analog Devices Inc.
+ * Copyright (c) Linux Test Project, 2009-2022
+ * Copyright (c) 2023 Wei Gao <wegao@suse.com>
+ */
+
+/*\
+ * [Description]
+ *
  * check out-of-bound/unaligned addresses given to
+ *
  *  - {PEEK,POKE}{DATA,TEXT,USER}
  *  - {GET,SET}{,FG}REGS
  *  - {GET,SET}SIGINFO
- *
- * Copyright (c) 2008 Analog Devices Inc.
- *
- * Licensed under the GPL-2 or later
  */
 
-#define _GNU_SOURCE
-
-#include <errno.h>
-#include <stdbool.h>
-#include <stdio.h>
 #include <stdlib.h>
-#include <unistd.h>
 #include <sys/ptrace.h>
-
-#include "test.h"
-#include "spawn_ptrace_child.h"
+#include "tst_test.h"
 
 /* this should be sizeof(struct user), but that info is only found
  * in the kernel asm/user.h which is not exported to userspace.
  */
+
 #if defined(__i386__)
 #define SIZEOF_USER 284
 #elif defined(__x86_64__)
@@ -32,168 +31,215 @@
 #define SIZEOF_USER 0x1000	/* just pick a big number */
 #endif
 
-char *TCID = "ptrace06";
-
-struct test_case_t {
+static struct test_case_t {
 	int request;
 	long addr;
 	long data;
 } test_cases[] = {
-	{
-	PTRACE_PEEKDATA,.addr = 0}, {
-	PTRACE_PEEKDATA,.addr = 1}, {
-	PTRACE_PEEKDATA,.addr = 2}, {
-	PTRACE_PEEKDATA,.addr = 3}, {
-	PTRACE_PEEKDATA,.addr = -1}, {
-	PTRACE_PEEKDATA,.addr = -2}, {
-	PTRACE_PEEKDATA,.addr = -3}, {
-	PTRACE_PEEKDATA,.addr = -4}, {
-	PTRACE_PEEKTEXT,.addr = 0}, {
-	PTRACE_PEEKTEXT,.addr = 1}, {
-	PTRACE_PEEKTEXT,.addr = 2}, {
-	PTRACE_PEEKTEXT,.addr = 3}, {
-	PTRACE_PEEKTEXT,.addr = -1}, {
-	PTRACE_PEEKTEXT,.addr = -2}, {
-	PTRACE_PEEKTEXT,.addr = -3}, {
-	PTRACE_PEEKTEXT,.addr = -4}, {
-	PTRACE_PEEKUSER,.addr = SIZEOF_USER + 1}, {
-	PTRACE_PEEKUSER,.addr = SIZEOF_USER + 2}, {
-	PTRACE_PEEKUSER,.addr = SIZEOF_USER + 3}, {
-	PTRACE_PEEKUSER,.addr = SIZEOF_USER + 4}, {
-	PTRACE_PEEKUSER,.addr = -1}, {
-	PTRACE_PEEKUSER,.addr = -2}, {
-	PTRACE_PEEKUSER,.addr = -3}, {
-	PTRACE_PEEKUSER,.addr = -4}, {
-	PTRACE_POKEDATA,.addr = 0}, {
-	PTRACE_POKEDATA,.addr = 1}, {
-	PTRACE_POKEDATA,.addr = 2}, {
-	PTRACE_POKEDATA,.addr = 3}, {
-	PTRACE_POKEDATA,.addr = -1}, {
-	PTRACE_POKEDATA,.addr = -2}, {
-	PTRACE_POKEDATA,.addr = -3}, {
-	PTRACE_POKEDATA,.addr = -4}, {
-	PTRACE_POKETEXT,.addr = 0}, {
-	PTRACE_POKETEXT,.addr = 1}, {
-	PTRACE_POKETEXT,.addr = 2}, {
-	PTRACE_POKETEXT,.addr = 3}, {
-	PTRACE_POKETEXT,.addr = -1}, {
-	PTRACE_POKETEXT,.addr = -2}, {
-	PTRACE_POKETEXT,.addr = -3}, {
-	PTRACE_POKETEXT,.addr = -4}, {
-	PTRACE_POKEUSER,.addr = SIZEOF_USER + 1}, {
-	PTRACE_POKEUSER,.addr = SIZEOF_USER + 2}, {
-	PTRACE_POKEUSER,.addr = SIZEOF_USER + 3}, {
-	PTRACE_POKEUSER,.addr = SIZEOF_USER + 4}, {
-	PTRACE_POKEUSER,.addr = -1}, {
-	PTRACE_POKEUSER,.addr = -2}, {
-	PTRACE_POKEUSER,.addr = -3}, {
-	PTRACE_POKEUSER,.addr = -4},
+	{PTRACE_PEEKDATA, .addr = 0},
+	{PTRACE_PEEKDATA, .addr = 1},
+	{PTRACE_PEEKDATA, .addr = 2},
+	{PTRACE_PEEKDATA, .addr = 3},
+	{PTRACE_PEEKDATA, .addr = -1},
+	{PTRACE_PEEKDATA, .addr = -2},
+	{PTRACE_PEEKDATA, .addr = -3},
+	{PTRACE_PEEKDATA, .addr = -4},
+	{PTRACE_PEEKTEXT, .addr = 0},
+	{PTRACE_PEEKTEXT, .addr = 1},
+	{PTRACE_PEEKTEXT, .addr = 2},
+	{PTRACE_PEEKTEXT, .addr = 3},
+	{PTRACE_PEEKTEXT, .addr = -1},
+	{PTRACE_PEEKTEXT, .addr = -2},
+	{PTRACE_PEEKTEXT, .addr = -3},
+	{PTRACE_PEEKTEXT, .addr = -4},
+	{PTRACE_PEEKUSER, .addr = SIZEOF_USER + 1},
+	{PTRACE_PEEKUSER, .addr = SIZEOF_USER + 2},
+	{PTRACE_PEEKUSER, .addr = SIZEOF_USER + 3},
+	{PTRACE_PEEKUSER, .addr = SIZEOF_USER + 4},
+	{PTRACE_PEEKUSER, .addr = -1},
+	{PTRACE_PEEKUSER, .addr = -2},
+	{PTRACE_PEEKUSER, .addr = -3},
+	{PTRACE_PEEKUSER, .addr = -4},
+	{PTRACE_POKEDATA, .addr = 0},
+	{PTRACE_POKEDATA, .addr = 1},
+	{PTRACE_POKEDATA, .addr = 2},
+	{PTRACE_POKEDATA, .addr = 3},
+	{PTRACE_POKEDATA, .addr = -1},
+	{PTRACE_POKEDATA, .addr = -2},
+	{PTRACE_POKEDATA, .addr = -3},
+	{PTRACE_POKEDATA, .addr = -4},
+	{PTRACE_POKETEXT, .addr = 0},
+	{PTRACE_POKETEXT, .addr = 1},
+	{PTRACE_POKETEXT, .addr = 2},
+	{PTRACE_POKETEXT, .addr = 3},
+	{PTRACE_POKETEXT, .addr = -1},
+	{PTRACE_POKETEXT, .addr = -2},
+	{PTRACE_POKETEXT, .addr = -3},
+	{PTRACE_POKETEXT, .addr = -4},
+	{PTRACE_POKEUSER, .addr = SIZEOF_USER + 1},
+	{PTRACE_POKEUSER, .addr = SIZEOF_USER + 2},
+	{PTRACE_POKEUSER, .addr = SIZEOF_USER + 3},
+	{PTRACE_POKEUSER, .addr = SIZEOF_USER + 4},
+	{PTRACE_POKEUSER, .addr = -1},
+	{PTRACE_POKEUSER, .addr = -2},
+	{PTRACE_POKEUSER, .addr = -3},
+	{PTRACE_POKEUSER, .addr = -4},
 #ifdef PTRACE_GETREGS
-	{
-	PTRACE_GETREGS,.data = 0}, {
-	PTRACE_GETREGS,.data = 1}, {
-	PTRACE_GETREGS,.data = 2}, {
-	PTRACE_GETREGS,.data = 3}, {
-	PTRACE_GETREGS,.data = -1}, {
-	PTRACE_GETREGS,.data = -2}, {
-	PTRACE_GETREGS,.data = -3}, {
-	PTRACE_GETREGS,.data = -4},
+	{PTRACE_GETREGS, .data = 0},
+	{PTRACE_GETREGS, .data = 1},
+	{PTRACE_GETREGS, .data = 2},
+	{PTRACE_GETREGS, .data = 3},
+	{PTRACE_GETREGS, .data = -1},
+	{PTRACE_GETREGS, .data = -2},
+	{PTRACE_GETREGS, .data = -3},
+	{PTRACE_GETREGS, .data = -4},
 #endif
 #ifdef PTRACE_GETFGREGS
-	{
-	PTRACE_GETFGREGS,.data = 0}, {
-	PTRACE_GETFGREGS,.data = 1}, {
-	PTRACE_GETFGREGS,.data = 2}, {
-	PTRACE_GETFGREGS,.data = 3}, {
-	PTRACE_GETFGREGS,.data = -1}, {
-	PTRACE_GETFGREGS,.data = -2}, {
-	PTRACE_GETFGREGS,.data = -3}, {
-	PTRACE_GETFGREGS,.data = -4},
+	{PTRACE_GETFGREGS, .data = 0},
+	{PTRACE_GETFGREGS, .data = 1},
+	{PTRACE_GETFGREGS, .data = 2},
+	{PTRACE_GETFGREGS, .data = 3},
+	{PTRACE_GETFGREGS, .data = -1},
+	{PTRACE_GETFGREGS, .data = -2},
+	{PTRACE_GETFGREGS, .data = -3},
+	{PTRACE_GETFGREGS, .data = -4},
 #endif
 #ifdef PTRACE_SETREGS
-	{
-	PTRACE_SETREGS,.data = 0}, {
-	PTRACE_SETREGS,.data = 1}, {
-	PTRACE_SETREGS,.data = 2}, {
-	PTRACE_SETREGS,.data = 3}, {
-	PTRACE_SETREGS,.data = -1}, {
-	PTRACE_SETREGS,.data = -2}, {
-	PTRACE_SETREGS,.data = -3}, {
-	PTRACE_SETREGS,.data = -4},
+	{PTRACE_SETREGS, .data = 0},
+	{PTRACE_SETREGS, .data = 1},
+	{PTRACE_SETREGS, .data = 2},
+	{PTRACE_SETREGS, .data = 3},
+	{PTRACE_SETREGS, .data = -1},
+	{PTRACE_SETREGS, .data = -2},
+	{PTRACE_SETREGS, .data = -3},
+	{PTRACE_SETREGS, .data = -4},
 #endif
 #ifdef PTRACE_SETFGREGS
-	{
-	PTRACE_SETFGREGS,.data = 0}, {
-	PTRACE_SETFGREGS,.data = 1}, {
-	PTRACE_SETFGREGS,.data = 2}, {
-	PTRACE_SETFGREGS,.data = 3}, {
-	PTRACE_SETFGREGS,.data = -1}, {
-	PTRACE_SETFGREGS,.data = -2}, {
-	PTRACE_SETFGREGS,.data = -3}, {
-	PTRACE_SETFGREGS,.data = -4},
+	{PTRACE_SETFGREGS, .data = 0},
+	{PTRACE_SETFGREGS, .data = 1},
+	{PTRACE_SETFGREGS, .data = 2},
+	{PTRACE_SETFGREGS, .data = 3},
+	{PTRACE_SETFGREGS, .data = -1},
+	{PTRACE_SETFGREGS, .data = -2},
+	{PTRACE_SETFGREGS, .data = -3},
+	{PTRACE_SETFGREGS, .data = -4},
 #endif
 #if HAVE_DECL_PTRACE_GETSIGINFO
-	{
-	PTRACE_GETSIGINFO,.data = 0}, {
-	PTRACE_GETSIGINFO,.data = 1}, {
-	PTRACE_GETSIGINFO,.data = 2}, {
-	PTRACE_GETSIGINFO,.data = 3}, {
-	PTRACE_GETSIGINFO,.data = -1}, {
-	PTRACE_GETSIGINFO,.data = -2}, {
-	PTRACE_GETSIGINFO,.data = -3}, {
-	PTRACE_GETSIGINFO,.data = -4},
+	{PTRACE_GETSIGINFO, .data = 0},
+	{PTRACE_GETSIGINFO, .data = 1},
+	{PTRACE_GETSIGINFO, .data = 2},
+	{PTRACE_GETSIGINFO, .data = 3},
+	{PTRACE_GETSIGINFO, .data = -1},
+	{PTRACE_GETSIGINFO, .data = -2},
+	{PTRACE_GETSIGINFO, .data = -3},
+	{PTRACE_GETSIGINFO, .data = -4},
 #endif
 #if HAVE_DECL_PTRACE_SETSIGINFO
-	{
-	PTRACE_SETSIGINFO,.data = 0}, {
-	PTRACE_SETSIGINFO,.data = 1}, {
-	PTRACE_SETSIGINFO,.data = 2}, {
-	PTRACE_SETSIGINFO,.data = 3}, {
-	PTRACE_SETSIGINFO,.data = -1}, {
-	PTRACE_SETSIGINFO,.data = -2}, {
-	PTRACE_SETSIGINFO,.data = -3}, {
-	PTRACE_SETSIGINFO,.data = -4},
+	{PTRACE_SETSIGINFO, .data = 0},
+	{PTRACE_SETSIGINFO, .data = 1},
+	{PTRACE_SETSIGINFO, .data = 2},
+	{PTRACE_SETSIGINFO, .data = 3},
+	{PTRACE_SETSIGINFO, .data = -1},
+	{PTRACE_SETSIGINFO, .data = -2},
+	{PTRACE_SETSIGINFO, .data = -3},
+	{PTRACE_SETSIGINFO, .data = -4},
 #endif
 };
 
-int TST_TOTAL = ARRAY_SIZE(test_cases);
+#define SPT(x)[PTRACE_##x] = #x,
+static char *strings[] = {
+	SPT(TRACEME)
+	SPT(PEEKTEXT)
+	SPT(PEEKDATA)
+	SPT(PEEKUSER)
+	SPT(POKETEXT)
+	SPT(POKEDATA)
+	SPT(POKEUSER)
+#ifdef PTRACE_GETREGS
+	SPT(GETREGS)
+#endif
+#ifdef PTRACE_SETREGS
+	SPT(SETREGS)
+#endif
+#ifdef PTRACE_GETSIGINFO
+	SPT(GETSIGINFO)
+#endif
+#ifdef PTRACE_SETSIGINFO
+	SPT(SETSIGINFO)
+#endif
+#ifdef PTRACE_GETFGREGS
+	SPT(GETFGREGS)
+#endif
+#ifdef PTRACE_SETFGREGS
+	SPT(SETFGREGS)
+#endif
+	SPT(KILL)
+	SPT(SINGLESTEP)
+};
+
+static inline char *strptrace(int request)
+{
+	return strings[request];
+}
+
+static void child(void)
+{
 
-int main(int argc, char *argv[])
+	char path[512];
+
+	SAFE_PTRACE(PTRACE_TRACEME, 0, NULL, NULL);
+
+	if (tst_get_path("ptrace06_child", path, sizeof(path)))
+		tst_brk(TCONF, "Couldn't find ptrace06_child in $PATH");
+
+	TEST(execl(path, "ptrace06_child", "", NULL));
+	tst_brk(TFAIL | TTERRNO,
+			"Failed to execute execl01_child");
+	exit(0);
+}
+
+static void run(void)
 {
 	size_t i;
-	long ret;
-	int saved_errno;
+	int pid;
+	int status;
 
-	tst_parse_opts(argc, argv, NULL, NULL);
+	pid = SAFE_FORK();
 
-	make_a_baby(argc, argv);
+	if (!pid)
+		child();
+
+	SAFE_WAIT(&status);
+
+	if (!WIFSTOPPED(status))
+		tst_brk(TBROK, "child %d was not stopped", pid);
 
 	for (i = 0; i < ARRAY_SIZE(test_cases); ++i) {
 		struct test_case_t *tc = &test_cases[i];
 
-		errno = 0;
-		ret =
-		    ptrace(tc->request, pid, (void *)tc->addr,
-			   (void *)tc->data);
-		saved_errno = errno;
-		if (ret != -1)
-			tst_resm(TFAIL,
+		TEST(ptrace(tc->request, pid, (void *)tc->addr,
+					(void *)tc->data));
+		if (TST_RET != -1)
+			tst_brk(TFAIL | TERRNO,
 				 "ptrace(%s, ..., %li, %li) returned %li instead of -1",
 				 strptrace(tc->request), tc->addr, tc->data,
-				 ret);
-		else if (saved_errno != EIO && saved_errno != EFAULT)
-			tst_resm(TFAIL,
+				 TST_RET);
+		else if (TST_ERR != EIO && TST_ERR != EFAULT)
+			tst_brk(TFAIL | TERRNO,
 				 "ptrace(%s, ..., %li, %li) expected errno EIO or EFAULT; actual: %i (%s)",
 				 strptrace(tc->request), tc->addr, tc->data,
-				 saved_errno, strerror(saved_errno));
+				 TST_ERR, strerror(TST_ERR));
 		else
-			tst_resm(TPASS,
+			tst_res(TPASS,
 				 "ptrace(%s, ..., %li, %li) failed as expected",
 				 strptrace(tc->request), tc->addr, tc->data);
 	}
 
-	/* hopefully this worked */
-	ptrace(PTRACE_KILL, pid, NULL, NULL);
+	SAFE_PTRACE(PTRACE_CONT, pid, NULL, NULL);
 
-	tst_exit();
 }
+
+static struct tst_test test = {
+	.test_all = run,
+	.forks_child = 1,
+};
diff --git a/testcases/kernel/syscalls/ptrace/ptrace06_child.c b/testcases/kernel/syscalls/ptrace/ptrace06_child.c
new file mode 100644
index 000000000..350b0e8df
--- /dev/null
+++ b/testcases/kernel/syscalls/ptrace/ptrace06_child.c
@@ -0,0 +1,16 @@
+// SPDX-License-Identifier: GPL-2.0-or-later
+/*
+ * Copyright (c) 2018 Linux Test Project
+ * Copyright (C) 2015 Cyril Hrubis chrubis@suse.cz
+ */
+
+#define TST_NO_DEFAULT_MAIN
+#include "tst_test.h"
+
+int main(int argc, char *argv[])
+{
+
+	tst_res(TPASS, "%s executed", argv[0]);
+
+	return 0;
+}
-- 
2.35.3



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